Lighting device.



PATENTED JULY 21, 1908. O. K. THOMISONK: R. D. CODY.

LIGHTING DEVIGE.

AIPLIOATION FILED AUG.6,1906

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No. 893,951. PATENTED JULY 21, 1908. 0. K. THOMSON & R. D. CODY.

LIGHTING'DEVIGE. AiPLIOATION FILED AUG. 6,1906.

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UNITED STATES ORION K. THOMSON AND ROBERT D. CODY, ASSIGNMENTS, TO CAMERON BROWN, OF MIDLAND, MICHIGAN.

PATENT OEEIOE.

LIGHTING DEVICE.

Specification of Letters Patent.

Patented July 21, 1908.

Application filed August 6, 1906. Serial No. 329,410.

T 0 all whom it may concern:

Be it known that we, ORION K. THOMsON and ROBERT D. CODY, citizens of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Light ing Devices, of which the following is a specification.

Our invention relates to hydrocarbon burners in which a mantle of refractory ash is heated to incandescence through the medium of a Bunsen flame.

It provides a simple, cheap and eflioient apparatus by which liquid hydrocarbons may be vaporized and mixed with atmospheric air in such proportions as to provide a proper flame forthe purpose indicated. I

The initial heating of the apparatus may be performed by illuminating or similargas provided from public mains, and this may be continuously used as the source of light. Or, if the said gas is cut off after the apparatus is heated, fluid hydrocarbons may be introduced which, upon being vaporized, provide the illuminating gas, as well as means for the continuous operation of the apparatus.

The apparatus heretofore in use has been only adapted-to vaporize and burn the lighter hydrocarbons. The mechanism of our apparatus adapts it to. the use of the heavier products such as ordinary petroleum, and by the means which we provide we are able to completely vaporize these heavier and cheaper products, giving equal efliciency in the lamp and greater economy in its operation.

The principles of our invention are illustrated in the drawings, in which:

Figure 1 shows a front view of our inventionFig. 2 is a side view thereof; Fig. 3 is a vertical section of Fig. 1 on the line 33 of Fig. 1; Fig. 4 illustrates the construction of the gas regulating valves, in their relation to each other and the Bunsen tube.

Further describing our invention with reference to the drawings, 1 is the body portion of our apparatus within which is contained the mixing chamber 2, communicating by the passageways 3 with the burner tubes 4. At the lower part of the body and preferably integral therewith is a superheating chamber 5, preferably of annular form surrounding a central tube 6, which is open at the upper end into the mixing chamber, and the lower portion of which, through the openings 7,

the tube 8, is the vaporizing chamber 9. v

The vaporizing chamber is connected by a tube 10 to a valve 11, which controls the flow of fluid hydrocarbons through the tube 12 into the vaporizer.

The body portion of the apparatus may be connected with the gas pipe 13, which is attached to the bracket 14. The pipe 13' thus supports the entire apparatus, and through it the illuminating or other gas from external sources, may be fed to the apparatus. On entering the apparatus the gas passes through the port 16 and the pipe 17 to the needle valve 18 actuated by the stem 19. The gas is projected upwardly into the Bunsen tube 20, and as it passes through the open space between the valve and the intake end of the Bunsen tube it is mixed with atmospheric air and a complete mingling thereof is completed in the Bunsen tube and the mixing chamber 3. From this the mixed gases ass into the burner tubes, at the top of w ich they are ignited and heat the mantles 21 to incandescence. A portion of the mixed gases, however, passes downwardly through the tube 6 and the openings 7, where'they are lighted, producing a very hot non-luminous flame in the space 25 between the vaporizing chamber 9 and the superheating chamber 5. When the said chambers are sufficiently heated the valve 11 may be opened, thus permitting the fluid hydrocarbon, preferably a heavier petroleum product, to flow into the vaporizer. Here the material is vaporized at a moderate degree of heat and then passes through the tube 8 to the superheating chamber 5.

The heating flame below the chamber 5 causes the latter to be made intensely hot, and the vapor being here subjected to a higher degree of heat than before is caused to assume or complete the gaseous form, as well as to be greatly expanded in volume. The vapor then passes through the tube 26 to the needle valve 27. By the action of the latter the flow of the gasified and superheated hydrocarbon to the Bunsen tube is controlled. When such flow is properly established the'flow of illuminating gas can be cut off and the operation of the apparatus becomes continuous and self supporting. The flow of gas can moreover be so regulated by means of the needle valves 18 and 27 that the light may be turned very low or extinguished, while heavy gases, the result of the vaporization of the heavy petroleum products, will flow downwardly through the openings 7, where a continuous flame may be maintained, protected by the shield 28, to keep the apparatus heated to a vaporizing temperature. Upon admission of any suitable fluid to the vaporizing chamber by the action of the valve, the complete action of the apparatus will be resumed. ."Should external gas be lacking, the lower cup 28 may be filled with a combustible and ignited, whereby the vaporizer will be sufficiently heated to start the apparatus.

The princi les of this invention are applicable where fliquid hydrocarbons are vaporized and used to produce a Bunsen flame.

We claim:

1. In a lighting device of the class described, the combination with a vaporizing chamber, an annular superheating chamber spaced from said vaporizing chamber and communicating therewith and with central burner orifices between the space within the annular superheating chamber and the space between the superheating chamber and the vaporizing chamber, a mixing chamber communicating with the interior space of the superheating chamber, burners communicating with said mixing chamber, means for supplying liquid hydrocarbon to said vaporizing chamber, and means for supplying the vapor from said superheating chamber commingled with air to said mixing chamber.

2. In a lighting device of the class described, the combination with a vaporizing chamber, an annular superheating chamber spaced from said vaporizing chamber and communicating therewith and with central burner orifices between the space within the annular superheating chamber and the space between the superheating chamber and the vaporizing chamber, a mixing chamber communicating with the interior space of the superheating chamber, burners communicating with said mixing chamber, meansfor sup plying liquid hydro-carbon to said vaporizing chamber, means for supplying the vapor from said superheating chamber commingled with air to said mixing chamber, and

means for supplying burning gas commingled with air to said mixing chamber.

3. In a device of the class described, the combination with a vaporizing chamber, an annular superheating chamber spaced from said vaporizing chamber and communicating therewith and with central burner orifices between the s ace within the annular superheating cham er and the space between the superheating chamber and the vaporizing chamber, a mixing chamber communicating with the interior space of the superheating chamber, burners extending in opposite directions from said mixing chamber, a n-shaped gas tube communicating at one end with said mixing chamber and with the other end open to the air, means for supplying liquid hydro-carbon to said vaporizing chamber, and means for supplying vapor from said superheating chamber commingled with air to the open end of said gas tube.

4. In a lighting device of the class described, ahead comprising an annular superheating chamber having a mixing chamber communicating with its central space at one end and with burner orifices at the other end, a gas supply pipe connected to said head and supporting the same, burners extending in opposite directions from said mixing chamber, a n-shaped gas tube communicating at one end with said mixing chamber and with the other end open to the air, a vaporizing chamber spaced below said superheating chamber and communicating therewith, means for supplying liquid hydro-carbon to said vaporizing chamber, a valve tube extending from said head and communicating at one end with said gas supply pipe and with a valve at the other end spaced below the open end of said gas tube, and a valve connected to said superheating chamber and spaced below the open end of said gas tube.

In witness whereof we have hereunto set our hands, this 30th day of July A. D. 1906, in the presence of two subscribing witnesses.

ORION K. THOMSON. ROBERT D. CODY.

Witnesses:

E. BUssY, A. S. PHILLIPS. 

